Cellular phone battery pack



FIG. 1 is a perspective view of a celluar phone battery pack showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a front end view thereof;

FIG. 4 is a side view thereof, the other side being identical;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a rear end view thereof. 

The ornamental design for a cellular phone battery pack, as shown and described. 